aioテスト

OSによる非同期化
サービス:

package aio;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousServerSocketChannel;
import java.nio.channels.AsynchronousSocketChannel;
import java.nio.channels.CompletionHandler;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

/**
 * 
 * @author zhangshoulei
 */
public class AIOServer {
	public final static int PORT = 9888;
	private AsynchronousServerSocketChannel server;

	public AIOServer() throws IOException {
		server = AsynchronousServerSocketChannel.open().bind(
				new InetSocketAddress(PORT));
	}

	public void startWithFuture() throws InterruptedException,
			ExecutionException, TimeoutException {
		System.out.println("Server listen on " + PORT);
		Future<AsynchronousSocketChannel> future = server.accept();
		AsynchronousSocketChannel socket = future.get();
		ByteBuffer readBuf = ByteBuffer.allocate(1024);
		readBuf.clear();
		socket.read(readBuf).get(100, TimeUnit.SECONDS);
		readBuf.flip();
		System.out.printf("received message:" + new String(readBuf.array()));
		System.out.println(Thread.currentThread().getName());
	}

	public void startWithCompletionHandler() throws InterruptedException,
			ExecutionException, TimeoutException {
		System.out.println("Server listen on " + PORT);
		// 
		server.accept(null,
				new CompletionHandler<AsynchronousSocketChannel, Object>() {
					final ByteBuffer buffer = ByteBuffer.allocate(1024);

					public void completed(AsynchronousSocketChannel result,
							Object attachment) {
						System.out.println(Thread.currentThread().getName());
						System.out.println("start");
						try {
							buffer.clear();
							result.read(buffer).get(100, TimeUnit.SECONDS);
							buffer.flip();
							System.out.println("received message: "
									+ new String(buffer.array()));
						} catch (InterruptedException | ExecutionException e) {
							System.out.println(e.toString());
						} catch (TimeoutException e) {
							e.printStackTrace();
						} finally {

							try {
								result.close();
								server.accept(null, this);
							} catch (Exception e) {
								System.out.println(e.toString());
							}
						}

						System.out.println("end");
					}

					@Override
					public void failed(Throwable exc, Object attachment) {
						System.out.println("failed: " + exc);
					}
				});
		//  
		while (true) {
			Thread.sleep(1000);
		}

	}

	public static void main(String args[]) throws Exception {
		new AIOServer().startWithCompletionHandler();
	}
}

クライアント:

package aio;

import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousSocketChannel;

public class AIOClient {

	public static void main(String... args) throws Exception {
		AsynchronousSocketChannel client = AsynchronousSocketChannel.open();
		client.connect(new InetSocketAddress("localhost", 9888));
		client.write(ByteBuffer.wrap("test".getBytes())).get();
	}
}